Security was a big focus Monday in Cleveland as the Republican National Convention got underway.Click to watch News 9's coverage.A heavy law enforcement presence surrounded the convention area. Protests were loud but peaceful as many demonstrated against presumptive Republican presidential nominee Donald Trump."I'm a social studies teacher, and it really concerns me that so many people support someone who doesn't understand our Constitution," protester Fatim Oteh said.Not far away, another demonstration was taking place in support of Trump. Bill Dell rode his motorcycle from North Dakota for one purpose."Donald Trump is the candidate, and I do endorse him, but more so, I'm here to protect the democratic process this country was founded on," Dell said.Roads were barricaded throughout downtown Cleveland. Police K-9 units helped patrol the streets, and Coast Guard gun boats showed strength from the water.Police officers from Cincinnati to Texas were called in to help with security."The goal is to provide a safe environment and protect the constitutional liberties of all," Cincinnati police Officer Rich Rilley said.The featured speaker Monday night will be Trump's wife, Melania Trump.

CLEVELAND —

Security was a big focus Monday in Cleveland as the Republican National Convention got underway.